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Can sipi.bot Stop Prompt Injection?

sipi.bot won't detect an injection — but it makes injection pointless for spending. The decision path is a deterministic rules engine, and rules can't be talked into approving anything.

Why detection isn't enough

Injection detection is probabilistic; a bypass is always possible.

Even a detected injection needs something to stop the money from moving.

What sipi.bot does instead

The firewall never asks a model whether a transaction is OK. A rule either matches or it doesn't.

An injected instruction can't add a merchant to the allowlist, raise a cap, or approve a block.

The honest caveat

sipi.bot protects the money path. For content-level injection defense, pair it with a detection tool.

FAQ

Can an injected prompt approve a purchase?

No. Approvals come from rules, not from model output. Unknown merchants stay BLOCKED.

Do I still need injection detection?

Yes — for everything outside the money path. sipi.bot makes the spend damage impossible; detection protects the rest.

Is the decision path really model-free?

Yes — deterministic rules only, ~5 ms, no LLM in the loop.

Related

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One API call (or MCP tool) in front of every agent transaction — APPROVED, BLOCKED, or FLAGGED, deterministic, ~5 ms, fully logged.

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